[wxWidgets.git] / src / gtk / win_gtk.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/gtk/win_gtk.cpp
// Purpose:     native GTK+ widget for wxWindow
// Author:      Paul Cornett
// Id:          $Id$
// Copyright:   (c) 2007 Paul Cornett
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#include "wx/defs.h"
#include "wx/gtk/private.h"
#include "wx/gtk/private/win_gtk.h"

/*
wxPizza is a custom GTK+ widget derived from GtkFixed.  A custom widget
is needed to adapt GTK+ to wxWidgets needs in 3 areas: scrolling, window
borders, and RTL.

For scrolling, the "set_scroll_adjustments" signal is implemented
to make wxPizza appear scrollable to GTK+, allowing it to be put in a
GtkScrolledWindow.  Child widget positions are adjusted for the scrolling
position in size_allocate.  A second same-size GdkWindow is placed behind
widget->window, to allow GDK to use a more efficient scrolling technique.

For borders, space is reserved in realize and size_allocate.  The border is
drawn on wxPizza's parent GdkWindow.

For RTL, child widget positions are mirrored in size_allocate.
*/

static GtkWidgetClass* parent_class;

extern "C" {

struct wxPizzaClass
{
    GtkFixedClass parent;
    void (*set_scroll_adjustments)(GtkWidget*, GtkAdjustment*, GtkAdjustment*);
};

static void size_allocate(GtkWidget* widget, GtkAllocation* alloc)
{
    const bool is_resize =
        widget->allocation.width  != alloc->width ||
        widget->allocation.height != alloc->height;
    const bool is_move =
        widget->allocation.x != alloc->x ||
        widget->allocation.y != alloc->y;

    widget->allocation = *alloc;

    wxPizza* pizza = WX_PIZZA(widget);
    int border_x, border_y;
    pizza->get_border_widths(border_x, border_y);
    int w = alloc->width - 2 * border_x;
    if (w < 0) w = 0;

    if (GTK_WIDGET_REALIZED(widget) && (is_move || is_resize))
    {
        int h = alloc->height - 2 * border_y;
        if (h < 0) h = 0;

        if (pizza->m_is_scrollable)
        {
            // two windows, both same size
            gdk_window_move_resize(pizza->m_backing_window,
                alloc->x + border_x, alloc->y + border_y, w, h);
            if (is_resize)
                gdk_window_resize(widget->window, w, h);
        }
        else
        {
            // one window
            gdk_window_move_resize(widget->window,
                alloc->x + border_x, alloc->y + border_y, w, h);
        }
    }
    // adjust child positions
    for (const GList* list = pizza->m_fixed.children; list; list = list->next)
    {
        const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
        if (GTK_WIDGET_VISIBLE(child->widget))
        {
            GtkAllocation child_alloc;
            // note that child positions do not take border into
            // account, they need to be relative to widget->window,
            // which has already been adjusted
            child_alloc.x = child->x - pizza->m_scroll_x;
            child_alloc.y = child->y - pizza->m_scroll_y;
            GtkRequisition req;
            gtk_widget_get_child_requisition(child->widget, &req);
            child_alloc.width  = req.width;
            child_alloc.height = req.height;
            if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
            {
                child_alloc.x = w - child_alloc.x - child_alloc.width;
            }
            gtk_widget_size_allocate(child->widget, &child_alloc);
        }
    }
}

static void realize(GtkWidget* widget)
{
    parent_class->realize(widget);

    wxPizza* pizza = WX_PIZZA(widget);
    if (pizza->m_border_style || pizza->m_is_scrollable)
    {
        int border_x, border_y;
        pizza->get_border_widths(border_x, border_y);
        int x = widget->allocation.x + border_x;
        int y = widget->allocation.y + border_y;
        int w = widget->allocation.width  - 2 * border_x;
        int h = widget->allocation.height - 2 * border_y;
        if (w < 0) w = 0;
        if (h < 0) h = 0;
        if (pizza->m_is_scrollable)
        {
            // second window is created if wxWindow is scrollable
            GdkWindowAttr attr;
            attr.event_mask = 0;
            attr.x = x;
            attr.y = y;
            attr.width  = w;
            attr.height = h;
            attr.wclass = GDK_INPUT_OUTPUT;
            attr.visual = gtk_widget_get_visual(widget);
            attr.colormap = gtk_widget_get_colormap(widget);
            attr.window_type = GDK_WINDOW_CHILD;

            pizza->m_backing_window = gdk_window_new(
                gdk_window_get_parent(widget->window),
                &attr,
                GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP);

            gdk_window_set_user_data(pizza->m_backing_window, widget);
            gdk_window_reparent(widget->window, pizza->m_backing_window, 0, 0);
            gdk_window_resize(widget->window, w, h);

            // Parts of m_backing_window may be exposed temporarily while
            // resizing. Setting the backing pixmap to None prevents those
            // areas from being briefly painted black.
            gdk_window_set_back_pixmap(pizza->m_backing_window, NULL, false);
        }
        else
            gdk_window_move_resize(widget->window, x, y, w, h);
    }
}

static void unrealize(GtkWidget* widget)
{
    parent_class->unrealize(widget);

    wxPizza* pizza = WX_PIZZA(widget);
    if (pizza->m_backing_window)
    {
        gdk_window_set_user_data(pizza->m_backing_window, NULL);
        gdk_window_destroy(pizza->m_backing_window);
        pizza->m_backing_window = NULL;
    }
}

static void map(GtkWidget* widget)
{
    parent_class->map(widget);

    wxPizza* pizza = WX_PIZZA(widget);
    if (pizza->m_backing_window)
        gdk_window_show(pizza->m_backing_window);
}

static void unmap(GtkWidget* widget)
{
    parent_class->unmap(widget);

    wxPizza* pizza = WX_PIZZA(widget);
    if (pizza->m_backing_window)
        gdk_window_hide(pizza->m_backing_window);
}

// not used, but needs to exist so gtk_widget_set_scroll_adjustments will work
static void set_scroll_adjustments(GtkWidget*, GtkAdjustment*, GtkAdjustment*)
{
}

// Marshaller needed for set_scroll_adjustments signal,
// generated with GLib-2.4.6 glib-genmarshal
#define g_marshal_value_peek_object(v)   g_value_get_object (v)
static void
g_cclosure_user_marshal_VOID__OBJECT_OBJECT (GClosure     *closure,
                                             GValue       * /*return_value*/,
                                             guint         n_param_values,
                                             const GValue *param_values,
                                             gpointer      /*invocation_hint*/,
                                             gpointer      marshal_data)
{
  typedef void (*GMarshalFunc_VOID__OBJECT_OBJECT) (gpointer     data1,
                                                    gpointer     arg_1,
                                                    gpointer     arg_2,
                                                    gpointer     data2);
  register GMarshalFunc_VOID__OBJECT_OBJECT callback;
  register GCClosure *cc = (GCClosure*) closure;
  register gpointer data1, data2;

  g_return_if_fail (n_param_values == 3);

  if (G_CCLOSURE_SWAP_DATA (closure))
    {
      data1 = closure->data;
      data2 = g_value_peek_pointer (param_values + 0);
    }
  else
    {
      data1 = g_value_peek_pointer (param_values + 0);
      data2 = closure->data;
    }
  callback = (GMarshalFunc_VOID__OBJECT_OBJECT) (marshal_data ? marshal_data : cc->callback);

  callback (data1,
            g_marshal_value_peek_object (param_values + 1),
            g_marshal_value_peek_object (param_values + 2),
            data2);
}

static void class_init(void* g_class, void*)
{
    GtkWidgetClass* widget_class = (GtkWidgetClass*)g_class;
    widget_class->size_allocate = size_allocate;
    widget_class->realize = realize;
    widget_class->unrealize = unrealize;
    widget_class->map = map;
    widget_class->unmap = unmap;
    wxPizzaClass* klass = (wxPizzaClass*)g_class;

    // needed to make widget appear scrollable to GTK+
    klass->set_scroll_adjustments = set_scroll_adjustments;
    widget_class->set_scroll_adjustments_signal =
        g_signal_new(
            "set_scroll_adjustments",
            G_TYPE_FROM_CLASS(g_class),
            G_SIGNAL_RUN_LAST,
            G_STRUCT_OFFSET(wxPizzaClass, set_scroll_adjustments),
            NULL, NULL,
            g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
            G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);

    parent_class = GTK_WIDGET_CLASS(g_type_class_peek_parent(g_class));
}

} // extern "C"

GType wxPizza::type()
{
    static GtkType type;
    if (type == 0)
    {
        const GTypeInfo info = {
            sizeof(wxPizzaClass),
            NULL, NULL,
            class_init,
            NULL, NULL,
            sizeof(wxPizza), 0,
            NULL, NULL
        };
        type = g_type_register_static(
            GTK_TYPE_FIXED, "wxPizza", &info, GTypeFlags(0));
    }
    return type;
}

GtkWidget* wxPizza::New(long windowStyle)
{
    GtkWidget* widget = GTK_WIDGET(g_object_new(type(), NULL));
    wxPizza* pizza = WX_PIZZA(widget);
    pizza->m_backing_window = NULL;
    pizza->m_scroll_x = 0;
    pizza->m_scroll_y = 0;
    pizza->m_is_scrollable = (windowStyle & (wxHSCROLL | wxVSCROLL)) != 0;
    // mask off border styles not useable with wxPizza
    pizza->m_border_style = int(windowStyle & BORDER_STYLES);
    gtk_fixed_set_has_window(GTK_FIXED(widget), true);
    gtk_widget_add_events(widget,
        GDK_EXPOSURE_MASK |
        GDK_SCROLL_MASK |
        GDK_POINTER_MOTION_MASK |
        GDK_POINTER_MOTION_HINT_MASK |
        GDK_BUTTON_MOTION_MASK |
        GDK_BUTTON1_MOTION_MASK |
        GDK_BUTTON2_MOTION_MASK |
        GDK_BUTTON3_MOTION_MASK |
        GDK_BUTTON_PRESS_MASK |
        GDK_BUTTON_RELEASE_MASK |
        GDK_KEY_PRESS_MASK |
        GDK_KEY_RELEASE_MASK |
        GDK_ENTER_NOTIFY_MASK |
        GDK_LEAVE_NOTIFY_MASK |
        GDK_FOCUS_CHANGE_MASK);
    return widget;
}

// gtk_fixed_move does not check for a change before issuing a queue_resize,
// we need to avoid that to prevent endless sizing loops, so check first
void wxPizza::move(GtkWidget* widget, int x, int y)
{
    GtkFixed* fixed = &m_fixed;
    for (const GList* list = fixed->children; list; list = list->next)
    {
        const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
        if (child->widget == widget)
        {
            if (child->x != x || child->y != y)
                gtk_fixed_move(fixed, widget, x, y);
            break;
        }
    }
}

struct AdjustData {
    GdkWindow* window;
    int dx, dy;
};

// Adjust allocations for all widgets using the GdkWindow which was just scrolled
extern "C" {
static void scroll_adjust(GtkWidget* widget, void* data)
{
    const AdjustData* p = static_cast<AdjustData*>(data);
    if (widget->window == p->window)
    {
        widget->allocation.x += p->dx;
        widget->allocation.y += p->dy;
        // GtkFrame requires a queue_resize, otherwise parts of
        // the frame newly exposed by the scroll are not drawn.
        // To be safe, do it for all widgets.
        gtk_widget_queue_resize_no_redraw(widget);
        if (GTK_IS_CONTAINER(widget))
            gtk_container_forall(GTK_CONTAINER(widget), scroll_adjust, data);
    }
}
}

void wxPizza::scroll(int dx, int dy)
{
    GtkWidget* widget = GTK_WIDGET(this);
    if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
        dx = -dx;
    m_scroll_x -= dx;
    m_scroll_y -= dy;
    if (widget->window)
    {
        gdk_window_scroll(widget->window, dx, dy);
        // Adjust child allocations. Doing a queue_resize on the children is not
        // enough, sometimes they redraw in the wrong place during fast scrolling.
        AdjustData data = { widget->window, dx, dy };
        gtk_container_forall(GTK_CONTAINER(widget), scroll_adjust, &data);
    }
}

void wxPizza::get_border_widths(int& x, int& y)
{
    x = y = 0;
#ifndef __WXUNIVERSAL__
    if (m_border_style & wxBORDER_SIMPLE)
        x = y = 1;
    else if (m_border_style)
    {
        GtkWidget *entry_widget = wxGTKPrivate::GetEntryWidget();
        if (entry_widget->style)
        {
            x = entry_widget->style->xthickness;
            y = entry_widget->style->ythickness;
        }
    }
#endif
}
Commit	Line	Data
e56307d3 PC	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/gtk/win_gtk.cpp
	3	// Purpose: native GTK+ widget for wxWindow
	4	// Author: Paul Cornett
	5	// Id: $Id$
	6	// Copyright: (c) 2007 Paul Cornett
	7	// Licence: wxWindows licence
	8	///////////////////////////////////////////////////////////////////////////////
	9
	10	#include "wx/defs.h"
e8759560	11	#include "wx/gtk/private.h"
bbd92d1d	12	#include "wx/gtk/private/win_gtk.h"
e56307d3 PC	13
	14	/*
	15	wxPizza is a custom GTK+ widget derived from GtkFixed. A custom widget
	16	is needed to adapt GTK+ to wxWidgets needs in 3 areas: scrolling, window
	17	borders, and RTL.
	18
	19	For scrolling, the "set_scroll_adjustments" signal is implemented
	20	to make wxPizza appear scrollable to GTK+, allowing it to be put in a
	21	GtkScrolledWindow. Child widget positions are adjusted for the scrolling
	22	position in size_allocate. A second same-size GdkWindow is placed behind
	23	widget->window, to allow GDK to use a more efficient scrolling technique.
	24
75f661bb PC	25	For borders, space is reserved in realize and size_allocate. The border is
75f661bb PC	26	drawn on wxPizza's parent GdkWindow.
e56307d3 PC	27
	28	For RTL, child widget positions are mirrored in size_allocate.
	29	*/
	30
	31	static GtkWidgetClass* parent_class;
	32
	33	extern "C" {
	34
	35	struct wxPizzaClass
	36	{
	37	GtkFixedClass parent;
	38	void (set_scroll_adjustments)(GtkWidget, GtkAdjustment, GtkAdjustment);
	39	};
	40
	41	static void size_allocate(GtkWidget* widget, GtkAllocation* alloc)
	42	{
	43	const bool is_resize =
	44	widget->allocation.width != alloc->width \|\|
	45	widget->allocation.height != alloc->height;
	46	const bool is_move =
	47	widget->allocation.x != alloc->x \|\|
	48	widget->allocation.y != alloc->y;
	49
	50	widget->allocation = *alloc;
	51
	52	wxPizza* pizza = WX_PIZZA(widget);
	53	int border_x, border_y;
	54	pizza->get_border_widths(border_x, border_y);
	55	int w = alloc->width - 2 * border_x;
	56	if (w < 0) w = 0;
	57
	58	if (GTK_WIDGET_REALIZED(widget) && (is_move \|\| is_resize))
	59	{
	60	int h = alloc->height - 2 * border_y;
	61	if (h < 0) h = 0;
	62
	63	if (pizza->m_is_scrollable)
	64	{
4eccf53d	65	// two windows, both same size
e56307d3 PC	66	gdk_window_move_resize(pizza->m_backing_window,
e56307d3 PC	67	alloc->x + border_x, alloc->y + border_y, w, h);
4eccf53d PC	68	if (is_resize)
	69	gdk_window_resize(widget->window, w, h);
	70	}
e56307d3 PC	71	else
e56307d3 PC	72	{
4eccf53d PC	73	// one window
4eccf53d PC	74	gdk_window_move_resize(widget->window,
75f661bb	75	alloc->x + border_x, alloc->y + border_y, w, h);
e56307d3 PC	76	}
	77	}
	78	// adjust child positions
	79	for (const GList* list = pizza->m_fixed.children; list; list = list->next)
	80	{
	81	const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
	82	if (GTK_WIDGET_VISIBLE(child->widget))
	83	{
	84	GtkAllocation child_alloc;
	85	// note that child positions do not take border into
	86	// account, they need to be relative to widget->window,
	87	// which has already been adjusted
	88	child_alloc.x = child->x - pizza->m_scroll_x;
	89	child_alloc.y = child->y - pizza->m_scroll_y;
	90	GtkRequisition req;
	91	gtk_widget_get_child_requisition(child->widget, &req);
	92	child_alloc.width = req.width;
	93	child_alloc.height = req.height;
	94	if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
	95	{
	96	child_alloc.x = w - child_alloc.x - child_alloc.width;
	97	}
	98	gtk_widget_size_allocate(child->widget, &child_alloc);
	99	}
	100	}
	101	}
	102
	103	static void realize(GtkWidget* widget)
	104	{
	105	parent_class->realize(widget);
	106
	107	wxPizza* pizza = WX_PIZZA(widget);
e56307d3 PC	108	if (pizza->m_border_style \|\| pizza->m_is_scrollable)
e56307d3 PC	109	{
e56307d3 PC	110	int border_x, border_y;
e56307d3 PC	111	pizza->get_border_widths(border_x, border_y);
75f661bb PC	112	int x = widget->allocation.x + border_x;
75f661bb PC	113	int y = widget->allocation.y + border_y;
e56307d3 PC	114	int w = widget->allocation.width - 2 * border_x;
	115	int h = widget->allocation.height - 2 * border_y;
	116	if (w < 0) w = 0;
	117	if (h < 0) h = 0;
	118	if (pizza->m_is_scrollable)
	119	{
75f661bb PC	120	// second window is created if wxWindow is scrollable
	121	GdkWindowAttr attr;
	122	attr.event_mask = 0;
	123	attr.x = x;
	124	attr.y = y;
e56307d3 PC	125	attr.width = w;
e56307d3 PC	126	attr.height = h;
75f661bb PC	127	attr.wclass = GDK_INPUT_OUTPUT;
	128	attr.visual = gtk_widget_get_visual(widget);
	129	attr.colormap = gtk_widget_get_colormap(widget);
	130	attr.window_type = GDK_WINDOW_CHILD;
e56307d3	131
75f661bb PC	132	pizza->m_backing_window = gdk_window_new(
	133	gdk_window_get_parent(widget->window),
	134	&attr,
	135	GDK_WA_X \| GDK_WA_Y \| GDK_WA_VISUAL \| GDK_WA_COLORMAP);
e56307d3	136
75f661bb	137	gdk_window_set_user_data(pizza->m_backing_window, widget);
e56307d3	138	gdk_window_reparent(widget->window, pizza->m_backing_window, 0, 0);
75f661bb	139	gdk_window_resize(widget->window, w, h);
4eccf53d	140
75f661bb PC	141	// Parts of m_backing_window may be exposed temporarily while
	142	// resizing. Setting the backing pixmap to None prevents those
	143	// areas from being briefly painted black.
	144	gdk_window_set_back_pixmap(pizza->m_backing_window, NULL, false);
	145	}
	146	else
	147	gdk_window_move_resize(widget->window, x, y, w, h);
e56307d3 PC	148	}
	149	}
	150
	151	static void unrealize(GtkWidget* widget)
	152	{
	153	parent_class->unrealize(widget);
	154
	155	wxPizza* pizza = WX_PIZZA(widget);
	156	if (pizza->m_backing_window)
	157	{
	158	gdk_window_set_user_data(pizza->m_backing_window, NULL);
	159	gdk_window_destroy(pizza->m_backing_window);
	160	pizza->m_backing_window = NULL;
	161	}
	162	}
	163
	164	static void map(GtkWidget* widget)
	165	{
	166	parent_class->map(widget);
	167
	168	wxPizza* pizza = WX_PIZZA(widget);
	169	if (pizza->m_backing_window)
	170	gdk_window_show(pizza->m_backing_window);
	171	}
	172
	173	static void unmap(GtkWidget* widget)
	174	{
	175	parent_class->unmap(widget);
	176
	177	wxPizza* pizza = WX_PIZZA(widget);
	178	if (pizza->m_backing_window)
	179	gdk_window_hide(pizza->m_backing_window);
	180	}
	181
	182	// not used, but needs to exist so gtk_widget_set_scroll_adjustments will work
	183	static void set_scroll_adjustments(GtkWidget, GtkAdjustment, GtkAdjustment*)
	184	{
	185	}
	186
	187	// Marshaller needed for set_scroll_adjustments signal,
	188	// generated with GLib-2.4.6 glib-genmarshal
	189	#define g_marshal_value_peek_object(v) g_value_get_object (v)
	190	static void
	191	g_cclosure_user_marshal_VOID__OBJECT_OBJECT (GClosure *closure,
	192	GValue * /return_value/,
	193	guint n_param_values,
	194	const GValue *param_values,
	195	gpointer /invocation_hint/,
	196	gpointer marshal_data)
	197	{
	198	typedef void (*GMarshalFunc_VOID__OBJECT_OBJECT) (gpointer data1,
	199	gpointer arg_1,
	200	gpointer arg_2,
	201	gpointer data2);
	202	register GMarshalFunc_VOID__OBJECT_OBJECT callback;
	203	register GCClosure cc = (GCClosure) closure;
	204	register gpointer data1, data2;
	205
	206	g_return_if_fail (n_param_values == 3);
	207
	208	if (G_CCLOSURE_SWAP_DATA (closure))
	209	{
	210	data1 = closure->data;
	211	data2 = g_value_peek_pointer (param_values + 0);
212	}
213	else
214	{
215	data1 = g_value_peek_pointer (param_values + 0);
216	data2 = closure->data;
217	}
218	callback = (GMarshalFunc_VOID__OBJECT_OBJECT) (marshal_data ? marshal_data : cc->callback);
219
220	callback (data1,
221	g_marshal_value_peek_object (param_values + 1),
222	g_marshal_value_peek_object (param_values + 2),
223	data2);
224	}
225
226	static void class_init(void* g_class, void*)
227	{
228	GtkWidgetClass* widget_class = (GtkWidgetClass*)g_class;
229	widget_class->size_allocate = size_allocate;
230	widget_class->realize = realize;
231	widget_class->unrealize = unrealize;
232	widget_class->map = map;
233	widget_class->unmap = unmap;
234	wxPizzaClass* klass = (wxPizzaClass*)g_class;
235
236	// needed to make widget appear scrollable to GTK+
237	klass->set_scroll_adjustments = set_scroll_adjustments;
238	widget_class->set_scroll_adjustments_signal =
239	g_signal_new(
240	"set_scroll_adjustments",
241	G_TYPE_FROM_CLASS(g_class),
242	G_SIGNAL_RUN_LAST,
243	G_STRUCT_OFFSET(wxPizzaClass, set_scroll_adjustments),
244	NULL, NULL,
245	g_cclosure_user_marshal_VOID__OBJECT_OBJECT,
246	G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
247
248	parent_class = GTK_WIDGET_CLASS(g_type_class_peek_parent(g_class));
249	}
250
251	} // extern "C"
252
253	GType wxPizza::type()
254	{
255	static GtkType type;
256	if (type == 0)
257	{
258	const GTypeInfo info = {
259	sizeof(wxPizzaClass),
260	NULL, NULL,
261	class_init,
262	NULL, NULL,
263	sizeof(wxPizza), 0,
264	NULL, NULL
265	};
266	type = g_type_register_static(
267	GTK_TYPE_FIXED, "wxPizza", &info, GTypeFlags(0));
268	}
269	return type;
270	}
271
272	GtkWidget* wxPizza::New(long windowStyle)
273	{
274	GtkWidget* widget = GTK_WIDGET(g_object_new(type(), NULL));
275	wxPizza* pizza = WX_PIZZA(widget);
276	pizza->m_backing_window = NULL;
277	pizza->m_scroll_x = 0;
278	pizza->m_scroll_y = 0;
279	pizza->m_is_scrollable = (windowStyle & (wxHSCROLL \| wxVSCROLL)) != 0;
59d09ad4 PC	280	// mask off border styles not useable with wxPizza
59d09ad4 PC	281	pizza->m_border_style = int(windowStyle & BORDER_STYLES);
e56307d3 PC	282	gtk_fixed_set_has_window(GTK_FIXED(widget), true);
	283	gtk_widget_add_events(widget,
	284	GDK_EXPOSURE_MASK \|
	285	GDK_SCROLL_MASK \|
	286	GDK_POINTER_MOTION_MASK \|
	287	GDK_POINTER_MOTION_HINT_MASK \|
	288	GDK_BUTTON_MOTION_MASK \|
	289	GDK_BUTTON1_MOTION_MASK \|
	290	GDK_BUTTON2_MOTION_MASK \|
	291	GDK_BUTTON3_MOTION_MASK \|
	292	GDK_BUTTON_PRESS_MASK \|
	293	GDK_BUTTON_RELEASE_MASK \|
	294	GDK_KEY_PRESS_MASK \|
	295	GDK_KEY_RELEASE_MASK \|
	296	GDK_ENTER_NOTIFY_MASK \|
	297	GDK_LEAVE_NOTIFY_MASK \|
	298	GDK_FOCUS_CHANGE_MASK);
e56307d3 PC	299	return widget;
	300	}
	301
	302	// gtk_fixed_move does not check for a change before issuing a queue_resize,
	303	// we need to avoid that to prevent endless sizing loops, so check first
	304	void wxPizza::move(GtkWidget* widget, int x, int y)
	305	{
	306	GtkFixed* fixed = &m_fixed;
	307	for (const GList* list = fixed->children; list; list = list->next)
	308	{
	309	const GtkFixedChild* child = static_cast<GtkFixedChild*>(list->data);
	310	if (child->widget == widget)
	311	{
	312	if (child->x != x \|\| child->y != y)
	313	gtk_fixed_move(fixed, widget, x, y);
	314	break;
	315	}
	316	}
	317	}
	318
a8997071 PC	319	struct AdjustData {
	320	GdkWindow* window;
	321	int dx, dy;
	322	};
	323
	324	// Adjust allocations for all widgets using the GdkWindow which was just scrolled
	325	extern "C" {
	326	static void scroll_adjust(GtkWidget* widget, void* data)
	327	{
	328	const AdjustData* p = static_cast<AdjustData*>(data);
	329	if (widget->window == p->window)
	330	{
	331	widget->allocation.x += p->dx;
	332	widget->allocation.y += p->dy;
	333	// GtkFrame requires a queue_resize, otherwise parts of
	334	// the frame newly exposed by the scroll are not drawn.
	335	// To be safe, do it for all widgets.
	336	gtk_widget_queue_resize_no_redraw(widget);
	337	if (GTK_IS_CONTAINER(widget))
	338	gtk_container_forall(GTK_CONTAINER(widget), scroll_adjust, data);
	339	}
	340	}
	341	}
	342
e56307d3 PC	343	void wxPizza::scroll(int dx, int dy)
	344	{
	345	GtkWidget* widget = GTK_WIDGET(this);
	346	if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
	347	dx = -dx;
	348	m_scroll_x -= dx;
	349	m_scroll_y -= dy;
	350	if (widget->window)
e56307d3	351	{
a8997071 PC	352	gdk_window_scroll(widget->window, dx, dy);
	353	// Adjust child allocations. Doing a queue_resize on the children is not
	354	// enough, sometimes they redraw in the wrong place during fast scrolling.
	355	AdjustData data = { widget->window, dx, dy };
	356	gtk_container_forall(GTK_CONTAINER(widget), scroll_adjust, &data);
e56307d3 PC	357	}
	358	}
	359
	360	void wxPizza::get_border_widths(int& x, int& y)
	361	{
	362	x = y = 0;
75f661bb	363	#ifndef __WXUNIVERSAL__
e56307d3 PC	364	if (m_border_style & wxBORDER_SIMPLE)
	365	x = y = 1;
	366	else if (m_border_style)
	367	{
e8759560	368	GtkWidget *entry_widget = wxGTKPrivate::GetEntryWidget();
6de67633	369	if (entry_widget->style)
e56307d3	370	{
6de67633 RR	371	x = entry_widget->style->xthickness;
6de67633 RR	372	y = entry_widget->style->ythickness;
e56307d3 PC	373	}
e56307d3 PC	374	}
75f661bb	375	#endif
e56307d3	376	}